Question about Dell Dimension 4700 PC Desktop

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When i start the pc, it makes unusual fan noise and pc does not start but the amber light stays on.

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Open up the side of the case; and check for 'brown oozing' from tube like structures near where the big fan is located. These are capacitors. If you see brown ooze; that would mean the motherboard is dead. You can try removing the power cord; and inserting it again; or remove and reinsert the memory modules. Which, MAY allow it to power up again.

Posted on Sep 02, 2010

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My power button cable is missing so i plug into the wall pc starts up no noise but fan amber light but black screen graphics card fine?


Dont worry about on/off cable. if you have restart / reset button, remove that cable from motherboard and insert it in power on pins and use reset button as on/off switch.

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Will dried thermal paste make the fan run loud on a dell 4700?... when i power on, fan makes loud noise, black screen and wont boot and the power light led is amber (no blinking).. i changed the fan, tried...


You may try to remove the fan, clean it up. Also try to remove the processor heat sink (clean the thermal paste), reseat the processor, put a little thermal paste, that assemble it back. Before you do this, ground your self first(the easier way, hold any metal).


If this can't help,check the capacitor at your MoBo and if you found any unusual look like, it mean you need a new MoBo.

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Dell opitiplex 280 is not giving display. first of all his fan speed to much high and then after 4 or 5 day its display disappeared. its just picking now power and fan also start with high noise and...


OK, I use GX280s as home servers and ran into a similar problem with one of them...

The problem may be serious and not worth fixing (motherboard).

Turn power on
Fan(s) come on full power, sounds like a jet engine, or eventually gets that loud.

See if you power light has gone amber.

You get nothing on the screen, no Dell splash screen/post, nothing.

This is what I posted a while back concerning the above. Obviously I cannot bee 100% certain as I do not have your box in front of me. This a known issue.

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See if the power light goes amber after power up. I had (have - still siting in my basement) one that did same. Power up, fans go full blast . Power light goes and stays amber. This is USUALLY caused by bad capacitors on the mother board. Known GX280 problem going back. If you look on the motherboard, the capacitors should have flat tops and not leaking. If the are rounded or leaking, the MB has probably gone bad. Bottom line this is usually a defective motherboard. Mine was a bad caps issue, you issue could be different, but it does sound like the motherboard.

You can google "gx280 solid amber light loud fan" and see the issues. Here is one link.

http://community.spiceworks.com/topic/111476-gx280-solid-amber-light-and-loud-fan

I just replaced one of my old 280s with a dual core Dell Precision 390 workstation for about $118, and that included shipping, off of ebay.

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Help me i have gx280 tower type 3.0 ghz 20 machines i bought these machines from used markete few machines are trouble in cpu fan abnormal noising i removed al types of hardware components but...


See if the power light goes amber after power up. I had (have - still siting in my basement) one that did same. Power up, fans go full blast . Power light goes and stays amber. This is USUALLY caused by bad capacitors on the mother board. Known GX280 problem going back. If you look on the motherboard, the capacitors should have flat tops and not leaking. If the are rounded or leaking, the MB has probably gone bad.

I obviously can not be 100% sure about this as the unit is not here.

You can google "gx280 solid amber light loud fan" and see the issues. Here is one such link.

http://en.community.dell.com/support-forums/desktop/f/3514/p/19253544/19414291.aspx

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You didn't mention which fan makes the noise CPU, Chasis or the SMPS fan. Generally, the SMPS fan makes this type of noise when the greasing or the lubricant in it drys up.

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Computer wont power up. Light stay amber and fan come on


Hi. No I think mobo is ok as you've got power to fan and lights. Are the drives kicking in? if yes then I think its your memory. Also if the drives are kicking in then your cpu is also ok. So that leaves the memory and graphics card. Good luck

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The amber light is the error light on a Dell. It can mean a few things. 1. RAM has went bad, not properly seated. 2. Video card has went bad or come unseated. 3. Power supply is not working properly; or 4. Motherboard has went bad. Hope this helps & please remember to rate my answer.

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1 Answer

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Hello,
take the PSU (Power Supply Unit) from a known working computer, preferable to be the same model and test with it. when you do so make sure you disconnect any peripherals e.g ( Printer, CD-ROM, Floppy).

Look closely at the memory bay for any bent pins, and test with one memory at the time.

Let me know if this is still an issue.

Regards

Dec 23, 2008 | Dell OptiPlex GX280 PC Desktop

1 Answer

Amber Light and fan running


1st thing, disconnect everything but keyboard mouse and monitor, see if anything changes.

If the issue persists, ensure that all power and card connections for the motherboard are tight and secure. If you've added RAM or other parts, remove them. Reseat the RAM in the motherboard that came from Dell.

If none of those ideas have any effect on the issue, replace the motherboard.

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